Dimensions of Physics Quantities NEET Questions

Dimensions of Physics Quantities

Dimensions of Physics Quantities MCQ Questions

13.
The dimensional formula of the gravitational constant G (from F = Gm₁m₂/r²) is:
A.
[M⁻¹L³T⁻²]
B.
[ML³T⁻²]
C.
[M⁻¹L²T⁻²]
D.
[ML²T⁻²]
ANSWER :
A. [M⁻¹L³T⁻²]
14.
The dimensional formula of Planck's constant h (from E = hν) is:
A.
[ML²T⁻²]
B.
[ML²T⁻¹]
C.
[MLT⁻¹]
D.
[ML²T⁻³]
ANSWER :
B. [ML²T⁻¹]
15.
The dimensional formula of angular momentum (L = mvr) is:
A.
[MLT⁻¹]
B.
[ML²T⁻²]
C.
[ML²T⁻¹]
D.
[ML³T⁻¹]
ANSWER :
C. [ML²T⁻¹]
16.
The dimensional formula of surface tension (T = F/L) is:
A.
[ML²T⁻²]
B.
[MLT⁻²]
C.
[MT⁻²]
D.
[ML⁻¹T⁻²]
ANSWER :
C. [MT⁻²]
17.
The dimensional formula of coefficient of viscosity η (from F = ηA dv/dx) is:
A.
[ML⁻¹T⁻²]
B.
[ML⁻¹T⁻¹]
C.
[MLT⁻¹]
D.
[M⁻¹LT]
ANSWER :
B. [ML⁻¹T⁻¹]
18.
The dimensional formula of universal gas constant R (from PV = nRT) is:
A.
[ML²T⁻²K⁻¹mol⁻¹]
B.
[ML²T⁻²]
C.
[MLT⁻²]
D.
[M⁰L²T⁻²]
ANSWER :
A. [ML²T⁻²K⁻¹mol⁻¹]